Home / 39,636.34-54,696.70-21,730.96

Finding the Fourth Proportional to 39,636.34, 54,696.70 and 21,730.96

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Solution

The fourth proportional to 39,636.34, 54,696.70 and 21,730.96 is: 29,987.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,636.34 : 54,696.70 = 21,730.96 : x
  2. Step 2: Convert to fraction form
    39,636.34/54,696.70 = 21,730.96/x
  3. Step 3: Cross multiply
    39,636.34x = 54,696.70 × 21,730.96
  4. Step 4: Simplify right side
    39,636.34x = 1,188,611,799.83
  5. Step 5: Solve for x
    x = 1,188,611,799.83/39,636.34
  6. Step 6: Final answer
    x = 29,987.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.